Upper Transformation Temp A335: P5 Material
Upper Transformation Temp A335: P5 Material
(OP)
Hi All
Could someone help me out with the Upper Transformation Temperature (AC3 Temperature) for ASTM A335: P5 material. This is a 5%Cr / 0.5% material.
This query is in relation to a welded joint which requires PWHT. The PWHT will affect the thickness approval ranges.
Many Thanks in advance
Steve
Could someone help me out with the Upper Transformation Temperature (AC3 Temperature) for ASTM A335: P5 material. This is a 5%Cr / 0.5% material.
This query is in relation to a welded joint which requires PWHT. The PWHT will affect the thickness approval ranges.
Many Thanks in advance
Steve





RE: Upper Transformation Temp A335: P5 Material
Table 129.3.2
Ans 1505 deg F (820 deg C)
RE: Upper Transformation Temp A335: P5 Material
By the way just for clarification, the lower critical transformation temperature that I listed above is what you really need for your PWHT evaluation. If you exceeded the lower critical transformation temperature, you have a serious problem with the weld joint and knowing the upper transformation temperature will do nothing unless you plan on re-austenitizing and tempering the entire component.